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diff --git a/posts/2021-01-25-replacing-dropbox-with-s3.md b/posts/2021-01-24-replacing-dropbox-with-s3.md
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@@ -3,7 +3,7 @@ Title: Replacing Dropbox in favor of DigitalOcean spaces
 Description: Replacing Dropbox in favor of DigitalOcean spaces
 Slug: replacing-dropbox-in-favor-of-digitalocean-spaces
 Listing: true
-Created: 2021, January 25
+Created: 2021, January 24
 Tags: []
 ---
 
diff --git a/posts/2021-01-25-goaccess.md b/posts/2021-01-25-goaccess.md
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+---
+Title: Using GoAccess with Nginx to replace Google Analytics
+Description: Using GoAccess with Nginx to replace Google Analytics
+Slug: using-goaccess-with-nginx-to-replace-google-analytics
+Listing: true
+Created: 2021, January 25
+Tags: []
+---
+
+1. [Opting for log parsing](#opting-for-log-parsing)
+2. [Getting Nginx ready](#getting-nginx-ready)
+3. [Getting GoAccess ready](#getting-goaccess-ready)
+4. [Securing with Basic authentication](#securing-with-basic-authentication)
+
+I know! You cannot simply replace Google Analytics with parsing access logs and displaying a couple of charts. But to be honest, I actually never used Google Analytics to the fullest extent and was usually interested in seeing page hits and which pages were visited most often.
+
+I recently moved my blog from Firebase to a VPS and also decided to remove Google Analytics tracking code from the site since its quite malicious and tracks users across other pages also and is creating a profile of a user, and I've had it. But I also need some insight of what is happening on a server and which content is being read the most etc.
+
+I have looked at many existing solutions like:
+- [Umami](https://umami.is/)
+- [Freshlytics](https://github.com/sheshbabu/freshlytics)
+- [Matomo](https://matomo.org/)
+
+But the more I looked at them the more I noticed that I am replacing one evil with another one. Don't get me wrong. Some of these solutions are absolutely fantastic but would require installation of databases and something like PHP or Node. And I was not ready to put those things on my fresh server. Also having Docker installed is out of the question.
+
+## Opting for log parsing
+
+So, I defaulted to parsing already existing logs and generating HTML reports from this data.
+
+I found this amazing software [GoAccess](https://goaccess.io/) which provides all the functionalities I need, and it's a single binary. Written in Go.
+
+GoAccess can be used in two different modes.
+
+![GoAccess Terminal](/assets/goaccess/goaccess-dash-term.png)
+<center><i>Running in a terminal</i></center>
+
+![GoAccess HTML](/assets/goaccess/goaccess-dash-html.png)
+<center><i>Running in a browser</i></center>
+
+I, however, need this to run in a browser. So, the second option is the way to go. The Idea is to periodically run cronjob and export this report into a folder that gets then server by Nginx behind a Basic authentication.
+
+## Getting Nginx ready
+
+I choose Ubuntu on [DigitalOcean](https://www.digitalocean.com/). First I installed [Nginx](https://nginx.org/en/), and [Letsencrypt](https://letsencrypt.org/getting-started/) certbot and all the necessary dependencies.
+
+```sh
+# log in as root user
+sudo su -
+
+# first let's update the system
+apt update && apt upgrade -y
+
+# let's install
+apt install nginx certbot python3-certbot-nginx apache2-utils
+```
+
+After all this is installed we can create a new configuration for a statistics. Stats will be available at `stats.domain.com`.
+
+```sh
+# creates directory where html will be hosted
+mkdir -p /var/www/html/stats.domain.com
+
+cp /etc/nginx/sites-available/default /etc/nginx/sites-available/stats.domain.com
+nano /etc/nginx/sites-available/stats.domain.com
+```
+
+```nginx
+server {
+  root /var/www/html/stats.domain.com;
+  server_name stats.domain.com;
+
+  index index.html;
+  location / {
+    try_files $uri $uri/ =404;
+  }
+}
+```
+
+Now we check if the configuration is ok. We can do this with `nginx -t`. If all is ok, we can restart Nginx with `service nginx restart`.
+
+After all that you should add A record for this domain that points to IP of a droplet.
+
+Before enabling SSL you should test if DNS records have propagated with `curl stats.domain.com`.
+
+Now, it's time to provision TLS certificate. To achieve this, you execute command `certbot --nginx`. Follow the wizard and when you are asked about redirection always choose 2 (always redirect to HTTPS).
+
+When this is done you can visit https://stats.domain.com and you should get 404 not found error which is correct.
+
+
+## Getting GoAccess ready
+
+If you are using Debian like system GoAccess should be available in repository. Otherwise refer to the official website.
+
+```sh
+apt install goaccess
+```
+
+Now we create a shell script that will be executed every 10 minutes.
+
+```sh
+nano /var/www/html/stats.stats.com/generate-stats.sh
+```
+
+Contents of this file should look like this.
+
+```sh
+#!/bin/sh
+
+zcat -f /var/log/nginx/access.log* > /var/log/nginx/access-all.log
+
+goaccess \
+  --log-file=/var/log/nginx/access-all.log \
+  --log-format=COMBINED \
+  --exclude-ip=0.0.0.0 \
+  --ignore-crawlers \
+  --real-os \
+  --output=/var/www/html/stats.domain.com/index.html
+
+rm /var/log/nginx/access-all.log
+```
+
+Because after a while nginx creates multiple files with access logs we use [`zcat`](https://linux.die.net/man/1/zcat) to extract Gziped contents and create a file that has all the access logs. After this file is used we delete it.
+
+If you want to exclude your home IP's result look at the `--exclude-ip` option in script and instead of `0.0.0.0` add your own home IP address. You can find your home IP by executing `curl ifconfig.me` from your local machine and NOT from the droplet.
+
+Test the script by executing `sh /var/www/html/stats.domain.com/generate-stats.sh` and then checking `https://stats.domain.com`. If you can see stats instead of 404 than you are set.
+
+It's time to add this script to cron with `cron -e`.
+
+```go
+*/10 * * * * sh /var/www/html/stats.domain.com/generate-stats.sh
+```
+
+## Securing with Basic authentication
+
+You probably don't want stats to be publicly available, so we should create a user and a password for Basic authentication.
+
+First we create a password for a user `stats` with `htpasswd -c /etc/nginx/.htpasswd stats`.
+
+Now we update config file with `nano /etc/nginx/sites-available/stats.domain.com`. You probably noticed that the file looks a bit different from before. This is because `certbot` added additional rules for SSL.
+
+Your location portion the config file should now look like. You should add `auth_basic` and `auth_basic_user_file` lines to the file.
+
+```go
+location / {
+  try_files $uri $uri/ =404;
+  auth_basic "Private Property";
+  auth_basic_user_file /etc/nginx/.htpasswd;
+}
+```
+
+Test if config is still ok with `nginx -t` and if it is you can restart Nginx with `service nginx restart`.
+
+If you now visit `https://stats.domain.com` you should be prompted for username and password. If not, try reopening your browser.
+
+That is all. You now have analytics for your server that gets refreshed every 10 minutes.